A tariff change, checked against the bills
For a food-processing business in Landsborough, Queensland, the network tariff was worth a closer look. The right tariff depends on how and when a site uses electricity, including its demand—not simply how much electricity it buys.
Bulk reviewed the electricity bill and a year of interval data, compared the alternatives against the site’s actual load, and followed a change from Energex tariff 7200 to 8300 through to billing. The subsequent invoices confirmed that the new tariff was being applied.
The next step was to check the result. For July 2026, the new billed network charges were $13,237. The estimated cost of staying on the old tariff, using the same actual load, was $14,101: a difference of $864.
August showed the same pattern. Billed network charges were $13,191, compared with an estimated $14,009 on the old tariff—a difference of $819. Across the two months, the difference was $1,683, approximately 6%, excluding GST.
This was a like-for-like check of network charges, using actual half-hourly readings and the prices applying in those months. The new-tariff calculation closely matched the bills. The $1,683 is a two-month outcome against a modelled alternative, not an annual savings forecast.
The review therefore went beyond identifying another tariff: it followed the change through and checked the charges that appeared afterwards.
Sources and calculation notes
Historical case study; validation prepared 25 September 2026. Sources: the site’s electricity invoices, a year of interval data, actual July and August half-hourly readings and the network prices applicable to those months.
Across July and August 2026, the old-tariff model total was $28,110 and the new billed total was $26,428. Amounts are rounded to whole dollars; differences were calculated before rounding, so subtraction of the rounded totals can differ by a dollar.
Network charges only, excluding GST. Retail energy, environmental, market and direct metering charges are excluded. The alternative cost uses the same actual load as the billed periods. Tariff eligibility is site-specific; this result is not a guarantee for another site.